Valve.



G. B. lRIGHART.

VALVE.

'APPLICATION H LED 00126, 1911.

1,089,804. Patented'oct. 1, 1912.

57 l j Z '55* ffy j] fiy/ j Inventor Witnesses Attorneys tessera.

GERGE B. RIGHART, F NDllANtP-OLIS, ENEU'IANA.

To all 'whom it may concern:

Be it known thatI, GnoiicsB. RICHART, a

. citizen of the United States, residing at lndianapolis, in the county of Marion and State of Indiana, have invented a new arid useful Valve, of which the following is a speciiication.

This invention relates to in valves for pneumatic tires.

The primary object of the present invention isv to provide a valve mechanism for pneumatic tires or in fact any air tank or cushion which Will prevent the pressure from rising above a certain predetermined quantity, and when used in connection with vehicle tires the same is adapted to permit the escape of When the tire contacts With an obstruction.

In the drawings z-Figure lis a longitudinal sectional view of the valve. Fig. 2 is a section on the line 2-2 of Fig. 1. Fig. 3 is a section on the line 3-3 of Fig. 1.

In the drawings 10 designates the .cushion which is provided With an aperture through which the reduced stem 11 of the screivthreaded tube 12 extends, this tube being substantially semi-circular in cross section, the nut or enlargement 14 being positioned Within 'the cushion, this nut or enlargement being formed integral with or secured to the reduced portion of the tube Which entends Within the portion 16 of the substantially T-shaped coupling 17. The tube is securely clamped to thecushion by lock nuts 1&1 and 14C". The end portion 18 of the lcoupling is adapted to receive the inflating lvalve 19 which consists of the cylinder 2G which eX- tends Within the portion 18, being held against displacement by a set screw 212 This cylinder is provided with the reduced ere tension 22 to which the indating device may be secured, a dust cap 22 forming a closure for said extension, a coiled spring being an improvement arranged within the cylinder, one end oit' the cylinder,

- said coiled spring bearing against the apertured nut 25 arranged adjacent one end of and the other against an apertured plate 26 strom which the arms 27 ei;- tend, the arms 27 contacting with a-ball28 which incloses the. aperture 29 in the plate 30, the spring being 4oit sufficient strength to normally hold the ball 28 in Contact `With-the plate 30, the plate being concaved to form a" seat for the ball. As the air is forced through the reduced portion 27 of the cylink Specification of Letters Patent. Application filed ctober 2G, 1911.

- the portion 31 ltained in the cylinder 33 VALVE.

rarest-ea oet. i, i912. S-ellal No. 656,396.

der the ball Will be forced against the tension ot the spring, air being admitted to the coupling 17, passing through the tube 12 to i the cushion. Arranged 1n the portion 31 of the coupling 17, which is similar tion 18 is 'a cylinder 32 Which is held Within by means of a set screw 33, the cylinder being formed With apertures 34 in register Wit-h apertures 35 formed in the coupling. The end portion 38 of the cylinder 32 is apertured, said end portion being concaved interiorly to form a seat for a ball similar to the ball 28, said ball being centered to close the opening formed in the end portion 38 by the arms 37 of the apertured plate 3G which is similarly constructed to the plate 26. A coiled .spring 39 bears against the plate 36, the other end of the said spring contacting 'With the head 37 oit the screw-threaded plunger 41, said plunger passing through the screw-threaded nut L12 which incloses the outer end of the cylinder, the screw being advanced or retarded in order to increase .the pressure on the plate 37. v

Air is forced into the cushion the same passing through the cylinder l11 and the coupling and passes through the portion 22 of the cylinder' 20 overcoinino' the tendenc of the spring which seatsthe ball 28, the air then passing through the coupling 17 and to the tire or cushion. lt Will be noted that by regulating the plunger 41 which is held in fixed position by a nut 4:1', the valve convvill be opened when a certain quantity of air has been forced Within the cushion, thus by a proper regulation of the piston or plunger 41 it would be impossible to over-inflate the tire or cushion. lt will also be noted that when the saine is used in,connection with tires that should the tire contact With an obstruction, a through the tube 12 and will escape through the opening 311, thealined openings 83 and 341- perinitting the escape ot air when the ball is forced against the tension of the spring 33.

The many advantages of av device of this character Will be clearly apparent as it is noted that the same aitordssimple and eilicient means for preventing blow-outs of tires, the structure being such as may be easily and economically manufactured, the various partsbeing readily assembled.

portion of the air will be forcedtot What is claimed is a closure for the apertures in one end/of tlie A valve for air cushions consisting of a tube and a coiled spring interposed-between casing, a connection between said casing and the `movable plate and 'the apertured end 15 said cushion, said easing being formed with wall ,of the tube remote from that with 5 extensions, a tube removably positioned which the ball contacts.

Within. each of said extensions, an escape In testimony that I claim the foregoing as valve positioned within one of said tubes, my own, I have hereto ailixed my signature an apertured plate arranged at each end in the presence of two Witnesses.

of said tubes, an apertured plate movable GEORGE B. RICHART. 10 withinone of said tubes, said plate being Witnesses:

formed with a plurality of fingers, a ball W. R. HUNTER,

embraced by said lingers, said ball forming' WM. T. MEAD. 

